Terpolymer-coated polymer encapsulated active material

Abstract

A polymeric encapsulated fragrance is disclosed which is suitable for use in personal care and cleaning products. In a preferred embodiment of the invention the fragrance is encapsulated by a first polymer material to form a fragrance encapsulated polymer, the polymer encapsulated shell is then coated with a cationic polymer, preferably a terpolymer composed of methacrylamidopropyl trimethyl ammonium chloride, acrylamide and acrylic acid.

What is claimed is: 
     
       1. A personal or fabric care composition comprising an active material, said active material encapsulated by a polyurea microcapsule to provide a polymer encapsulated active material, the polyurea encapsulated active material is further coated by a terpolymer comprising methacrylamidopropyl trimethyl ammonium chloride, acrylamide and acrylic acid. 
     
     
       2. The personal or fabric care product of  claim 1 , wherein said product is a hair shampoo, hair rinse, bar soap, or body wash. 
     
     
       3. The composition of  claim 1 , wherein the terpolymer is combined with an anionic, nonionic or cationic polymer to provide additional tailoring of performance and product stability. 
     
     
       4. The composition of  claim 1 , wherein the terpolymer is combined with a nonionic, cationic, amphoteric or nonionic surfactant. 
     
     
       5. A method of using the composition of  claim 1  for imparting an olfactory effective amount of fragrance into a wash-off product comprising
 (a) encapsulating a fragrance material with a polyurea to form a polymer encapsulated fragrance; 
 (b) providing a terpolymer comprising methacrylamidopropyl trimethyl ammonium chloride, acrylamide and acrylic acid to the surface of the polyurea encapsulated fragrance to form the composition of  claim 1  that contains a coated polyurea encapsulated fragrance; and 
 (c) providing the composition of  claim 1  to a wash-off product. 
 
     
     
       6. The composition of  claim 1 , wherein the active material is a fragrance. 
     
     
       7. The composition of  claim 1 , wherein the terpolymer has a molecular weight of 100,000 to 1,200,000. 
     
     
       8. The composition of  claim 7 , wherein the terpolymer has a molecular weight of 500,000 to 1,000,000. 
     
     
       9. The personal or fabric care product of  claim 2 , wherein said product is a hair shampoo.